Sectional boat structure



Nov. 26, 1963 o. L. LUGER ETAL SECTIONAL BOAT STRUCTURE 5 Sheets-Sheet 1Filed June 22, 1959 f0 62 f/ if fin 5 5 r k E fimm H m m V1. 7 73 My mm0 Z? 2% 5 Nov. 26, 1963 o. LUGER ETAL SECTIONAL BOAT STRUCTURE 3Sheets-Sheet 2 Filed June 22, 1959 RAM/V0 A .L val-R Nov. 26, 1963 o.LUGER ETAL 3,

SECTIONAL BOAT STRUCTURE Filed June 22, 1959 3 Sheets-Sheet 3 AWE/V7025dew/v0 A U625? Pam/0.40.1 1 065m:

United States Patent 3,111,691 SECTIONAL BOAT STRUCTURE Ormond LouisLuger, 9612 Oakland Ave. S., and Rennold J. Luger, Jr., 4505 BelvidereLane, both of Minneapolis, Minn.

Filed June 22, 1959, Ser. No. 821,847 7 Claims. (Cl. 9-2) This inventionrelates to boat structures and more particularly to sectional boatstructures.

In many conventional boat kit structures most of the separate componentparts are left disassembled in order to permit compact packagingthereof. The assembly procedure of this kind of structure requires ahigh degree of craftsmanship and specialized tools since, for example,this type of boat structure is often made of wood material which oftentimes requires many of the parts to be steam-bent. It is readilyapparent that this assembly procedure of this type of boat structure isnot only a complicated one but involves a rather time consumingoperation. There are no known boat structures comprised of relativelyfew integral sections or parts and adapted for ready assembly withoutrequiring specialized tools or the like and constructed in the manner soas to permit compact nesting thereof.

It is, therefore, a general object of our invention to provide a novelsectional boat structure of simple and inexpensive construction andarranged and constructed for rapid assembly.

Another object of this invention is to provide a novel sectional boatcomprising a plurality of integral sections arranged and constructed forrapid assembly.

A still further object of our invention is to provide a boat structurecomprising a plurality of integral sections arranged and constructedwhereby said sections may be nested in compact relation.

These and other objects and advantages of our invention will more fullyappear from the following description made in connection with theaccompanying drawings, wherein like reference characters refer to thesame or similar parts throughout the several views, and in which:

FIG. 1 is a view in perspective of the novel boat structure in itsassembled condition;

FIG. 2 is a view in perspective of the novel boat structure exploded toshow the structural details of the various sections thereof;

FIG. 3 is a side elevational view of the boat structure exploded to showthe shape and configuration of the various sections of the boat;

FIG. 4 is a longitudinal section of the boat with various sections innested relation and hidden portions thereof indicated by dotted lines;

FIG. 5 is a vertical section taken on lines 55 of FIG. 1 and looking inthe direction of the arrows;

FIG. 6 is a transverse section taken on lines 66 of FIG. 1 and lookingin the direction of the arrows;

FIG. 7 is a vertical section taken on lines 7--7 of FIG. 1 and lookingin the direction of the arrows;

FIG. 8 is a side elevational view of a different embodiment of theinvention and shown in its assembled condition;

FIG. 9 is a side elevational view of the embodiment disclosed in FIG. 8but showing the sections in a nested condition;

FIG. 10 is a side elevational view of still another embodiment of theinvention with the boat shown in its assembled condition;

FIG. 11 is a side elevational view of the embodiment shown in FIG. 10with the boat in the nested condition;

FIG. 12 is a vertical section of the embodiment shown in FIG. 10 takenon line 12--12 and looking in the direction of the arrows;

3,1 1 1,691 Patented Nov. 26, 1963 "ice FIG. 13 is an enlargedfragmentary perspective showing a different manner forming the stern ofthe boat; and

FIG. 14 is an enlarged exploded fragmentary cross section of theembodiment disclosed in FIG. 1 indicating one manner in which thesections may be secured together.

Referring now to the drawings, the novel sectional boat is generallydesignated 9 and includes a unitary lower hull section 10, andintermediate hull section 11 and an upper hull section 12. Thesesections may be formed of molded material such as plastic, moldedplywood or the like, but the preferred embodiment employs a waterprooftough material such as fiber glass in a suitable plastic binder ormatrix.

The unitary lower hull section 10 comprises a bottom 13 whose widthprogressively narrows forwardly and also includes a conventional keelplate 13a. Bottom 13 has integrally formed side portions 14 extendingupwardly and outwardly therefrom. Side portions 14 are elongated andconverge forwardly to a bow portion and terminate in bow line 14a whichas seen in FIG. 2 extends upwardly and forwardly. Bottom 13 terminatesrearwardly in an upstanding wall portion 15 which includes an inwardlyoffset middle part 15a, longitudinally extending parts 15b, andtransverse end parts 15c. Upstanding wall portion 15 is integral withbottom 13 and extends between and is integral with sides 14. The middlepart 15a of upstanding wall 15 together with similar portions of othersections provide a mounting or transom for a conventional outboard typemotor. This offset type stern, because of its spaced box-like portions,imparts additional buoyancy and stability to the boat. The sides 14 ofthe lower hull section 10 terminate upwardly in upper peripheral edges16 which define horizontal attachment surfaces 17 adjacent the forwardportion thereof and vertical attachment surfaces 18 adjacent the rearends thereof.

Intermediate hull section 11 comprises elongated sides 19 convergingforwardly to a bow portion and terminate in a bow line 20. Referring toFIG. 2, it will be seen that bow line 20 curves upwardly and forwardlyand that the intermediate hull section 11 is of an overall lengthsubstantially less than the overall length of lower hull section 10. Theelongated sides 19 of intermediate hull section 11 have substantiallystraight lower peripheral edges 21 which define substantially horizontalattachment surfaces 21a. It will also be noted from FIG. 3 that theupper peripheral edges 16 of lower hull section 10 are alsosubstantially straight. The upper peripheral edges 22 of sides 19extended from bow line 20 and are parallel with lower peripheral edges21 over a substantial length thereof and curve rearwardly and downwardlyto the lower peripheral edges 21 as at 23. The upper peripheral edges 22of elongated sides 19 define substantially vertical cooperatingattachment surfaces 22a.

The upper hull section 12 includes sides 24 which are elongated andconverge forwardly to a bow line 25. Referring to FIG. 3, it will beseen that sides 24 of upper hull section 12 have lower peripheral edges26 which extend rearwardly from bow line 25 and present a relativelystraight surface 26a over a substantial length thereof. Lower peripheraledges 26 curve downwardly at an intermediate part 26b and terminaterearwardly in a substantially straight surface 2450. Again referring toFIGS. 5 and 6, it will be noted that the straight surfaces 260 definesubstantially vertical cooperating attachment surfaces 27a and thecurved surfaces 26b of lower peripheral edges 26 define substantiallyvertically cooperating attach ment surfaces 27b While the straightperipheral surfaces 26c define substantially vertical cooperatingattachment surfaces 27c. The upper edge of sides 24 is substantiallystraight and whereby said sides 24 are of greater height adjacent theirstern or rearward portions than that of their bow or forward positions.

The upper hull section 12 includes a deck 28 integrally formed with andextending between said sides 24 adjacent the bow line 25. Deck 28includes relatively narrow, spaced side deck portions integrally formedwith and extending from the rear edge 28a thereof. Side deck portions 29extend reanwardly and terminate in inwardly offset enlarged stern deckportions 30 to thereby define a cockpit 31. Referring now to FIGS. 1 and2, it will be seen that the rear edge 28a of deck 28 terminates in adownwardly extending flange 32 while side deck portions 29 and sterndeck portions 30 have their inner edges terminating in depending flanges33. Upper hull section 12 also includes an upright wall portion 34 whichextends between and is integrally formed with flanges 33 of stern deckportion 30. The rear edges of each respective side 24 and its flanges 33are joined by a vertical section 33a. It will also be noted from FIG. 1that upright wall portion 34 is offset inwardly from the rear ends ofsides 24.

Referring now to FIGS. 5 and 6, it will be noted that cross sectionalWidths taken at given points along the intermediate hull section 11 andthe upper hull section 12 are greater than corresponding cross sectionalwidths taken at similar points along lower hull section 10. Thisrelative difference in width size permits the lower hull section to benested within the intermediate and upper hull sections when packaged forshipping. When the various sections of the boat are prepared forshipping, the upper hull section 12 is first inverted with the deck 28disposed downwardly. Intermediate hull section 11 is then also invertedand the upper peripheral attachment surfaces 22a thereof are positionedupon the lower cooperating attachment surfaces 27a and 27b of upper hullsection 12. It will be noted that the lower peripheral edge portion 26cof upper hull section 12 and lower peripheral edge 21 of intermediatehull section 11 define a substantially horizontal plane. The lower hullsection is then placed within the inverted intermediate and upper hullsections 11 and 12 respectively with its bottom 13 disposed downwardly.The height of the section thus nested, as seen in FIG. 4, is no greaterthan the height of the side of a given section.

In the preferred embodiment, lower hull section 10 is provided with aplurality of hollow ribs 35 which may be molded separately from thelower hull section 10 and which may be form-ed of suitable plastic orfiber glass material embedded in a suitable plastic matrix or binder.Lower hull section 10 is preferably provided with thwarts or seats 36which may be molded of fiber glass or plastic material.

Thwarts 36 may be provided with conventional seat backs (not shown)which together with the thwarts give lateral reinforcement to theassembled boat at spaced transverse points. A self-bailing motor well36b as shown in FIG. I may be provided between the rear thwart and thetransom and is securely bolted in place when the boat is fullyassembled. The self-bailing motor well permits water to be dischargedtherefrom in a manner well known in the art. In the preferredembodiment, the boat is also provided with a pair of receptacles 360which are positioned above and adjacent the front thwart 36 and whichreinforce the seat back. It will be noted that each receptacle 36c opensrearwardly and comprises a unitary element which may be secured to theinner flange of the upper hull section. Each of the receptacles 36c maybe formed of suitable plastic or fiber glass material embedded in asuitable plastic matrix or binder.

It will be noted that the accessories and parts including thwarts 36,self-bailing motor well 36b and receptacles 360, etc, are of suchinherent unitary structure to thereby permit them to be disposed withinthe nested sections.

When the boat is assembled, the upper hull section 12 is inverted andplaced upon a floor or supporting surface with the deck disposeddownwardly and the engagement surfaces thereof are coated with asuitable plastic cement material. The upper engagement surfaces of theintermediate hull section 11 are also coated with a suitable plasticcement and the intermediate hull section is thereafter inverted andpositioned in place upon the upper hull section with the respectivelower peripheral edges of the upper hull section 12 engaging the upperperipheral edges of the intermediate hull section 11. Bolts 37, as shownin FIGS. 5 and 6, or clamps or the like may be employed to maintain theattachment surface in binding contact.

A plurality of supporting means such as barrels may then be disposedwithin the confines of the upper and intermediate hull section and thelower hull section 10 is inverted and placed thereupon with the bottom13 disposed upwardly. Referring now to FIG. 14, which shows one mannerin which the lower hull section 10 is secured to the intermediate andupper hull sections 11 and 12 respectively, it will be seen that a stripof fiber glass material 17a is cemented to the lower attachment surface21a of intermediate hull section 11. The upper attachment surfaces ofthe lower hull section 10 are thereafter coated with a suitable plasticcement material as is the strip 17a and the lower attachment surface 27cof the upper hull section 12. The intermediate and upper hull sections11 and 12 respectively are then lifted whereby the respective lowerattachment surfaces thereof engage the upper attachment surfaces of thelower hull section. Bolts or clamps or the like may also be used tomaintain these attachment surfaces in their secured binding contact. Inorder to assure an effective watertight seal along the inner junctureline of the assembled sections, we have provided another strip of fiberglass material 17b as shown in FIG. 14.

Referring now to FIG. 7, the upstanding wall portion 15 of the lowerhull section 10 and upstanding wall portions 34 of the upper hullsection 12 are secured together to thereby define a stem or transom ofthe assembled boat. In order to provide a transom having suflicientstructural strength to support a substantially heavy outboard motor,these upstanding wall portions are bolstered by a pair of panels 38disposed on either side thereof and secured in abutting relation againstupstanding wall portions 15 and 34 respectively by any conventionalsecuring means such as bolts 37 or the like. The panels may be formed ofany suitable material such as plywood or the like. It will be noted fromFIG. 1 that the upstanding wall portion 15 and sides 14 of the lowerhull section together with the stern deck portions 30, sides 24 andupstanding wall portion 34, of upper hull section 12 define box-likefloats which, of course, impart additional buoyancy and lateralstability to the stern deck portion of the boat. When the boat structureis assembled, bow lines 140, 20 and 25 comprise an upwardly andforwardly curved prow line.

Referring now to FIG. 13, a different manner of forming the stern ortransom portion of the boat is disclosed wherein the side 24 of theupper hull section terminates rearwardly in transversely extendingflanges 39. The bottom 13 of the lower hull section terminates in anupwardly extending flange 40 and the sides 14 are provided with inwardlyand laterally extending flanges 41. It is pointed out that the flanges39, 40 and 41 are formed integrally with the respective hull section andprovide means for securing a transom panel 42 thereto. Panel 42 isslightly inclined from the vertical and may be secured to the flanges ofthe respective hull section by bolts 43 or the like.

Referring now to FIG. 8, it will be seen that we have provided as adifferent embodiment of this invention, a two sectional boat designatedgenerally 50 comprising a unitary upper hull section 51 and a unitarylower hull section 52 which in the preferred embodiment is formed offiber glass and a suitable plastic binder or matrix in the manner of thefirst embodiment of the novel sectional boat. The unitary lower hullsection 52 comprises a bottom 53 which width progressively narrowsforwardly similarly to the above described three sectional boat. Bottom53 also has integrally formed side portions 54 extending upwardly andoutwardly therefrom and which are elongated to converge forwardly to abow portion and terminate in a bow line 55. Bottom 53 terminatesrearwardly in an upstanding wall portion 56 and, of course, is providedwith upper peripheral edges 57 having attachment surfaces for attachmentto the lower peripheral edges of the upper hull section 51.

The upper hull section 51 comprises elongated sides 58 convergingforwardly to a bow portion and terminating in a bow line 59. The uppersection 51 also includes an upstanding wall portion 60 adjacent the rearends of the sides 58. Referring now to FIG. 9, it will be noted that theoverall length of lower hull section 52 is substantially less than theoverall length of upper hull section 51. Upper hull section 51 may alsobe provided with .a deck 61 integrally formed with and extending betweenthe sides 58 adjacent the bow line 59 which together with sides 58 andupstanding wall portion 60 define a cockpit opening 62. Since theoverall length of the upper hull section 51 is substantially greaterthan the overall length of lower hull section 52, the respectivesections may be nested with the lower hull section 52 disposed andnested Within the upper hull section 51. One Way of accomplishing thisnesting is by inserting the bow end of the lower hull section 52 throughthe cockpit opening 62 of the upper hull section 51 whereby the bowportions of each respective section are disposed closely adjacent eachother in the manner shown in FIG. 9. Sectional boat 50 may be assembledin the manner of sectional boat 9.

Additional parts or accessories such as thwarts, seat backs, aself-bailing motor well, etc., may be provided and, such parts, ofcourse, will be disposed in the nested sections in the manner set forthdescribing the first embodiment of the invention.

Referring now to FIGS. 10, 11 and 12, it will be seen that we haveprovided as a third embodiment of the invention, a three sectional boatdesignated generally 80 comprising an upper hull section 81 andintermediate hull section 82 and a lower hull section 83, each sectionformed of fiber glass and a suitable plastic binder or matrix in themanner of the other embodiments described above. The unitary lower hullsection 83 may include a bottom 84 having a width which progressivelynarrows forwardly and may include a conventional keel plate 84aintegrally formed therewith. Bottom 84 also has integrally formed sideportions 85 extending upwardly and outwardly therefrom and which areelongated and converge forwardly to a bow portion and terminate in a bowline 86. Bottom 84 may also terminate rearwardly in an upstanding wallportion 87 which extends between side portions 85. Sides 85 of the lowerhull section 83 terminate upwardly in upper peripheral edges 88 whichdefine horizontally extending attachment surfaces 88a.

Intermediate hull section 82 comprises elongated sides 89 which convergeforwardly to a bow portion and terminate in a bow line 90. Intermediatehull section 82 may also include an upstanding wall portion 91 adjacentthe rear ends of sides 89. Elongated sides 89 of intermediate hullsection 82 terminate downwardly in substantially straight peripheraledges 92 defining attachment surfaces 93 for attachment to the upperperipheral attachment surfaces 88 of lower hull section 83. Sides 89 ofintermediate hull section 82 also terminate in upper peripheral edges 94which define attachment surfaces 95.

Upper hull section 81 includes substantially shallow sides 96 which areelongated and converge forwardly to a bow point 97. In the preferredembodiment, the side portions 96 of the upper hull section 81 are notinterconnected with a rear wall section and the stern ends thereofterminate in free stern ends. Upper hull section 81 may also be providedwith a deck portion 99 integral with and extending between sides 96.Deck portion 99 together with sides 96 define a cockpit opening 100.

Sectional boat may also be provided with thwarts or seats of the typedescribed in the other embodiment and may also include the self-bailingwell also described with respect to the other three sectional boat.Sectional boat 80 may also be assembled in the manner set forthdescribing the assembly process with regard to the other three sectionalboat.

Referring now to FIG. 11, it will be seen that three sectional boat 80is nested in a manner somewhat differently than that of the sectionalboat 9. It will be noted that the peripheral edges of the respectivesections of sectional boat 80 are in substantial parallel relation witheach other and that the attachment flanges associated with each sectionis disposed in a substantially horizontal plane when the boat isassembled. It will also be noted, of course, that the lower hull section83 has an overall length substantially less than the overall length ofthe intermediate hull section 82.

To nest three sectional boat 80, the lower hull section is inverted withthe bottom disposed upwardly and the intermediate hull section 82 isplaced thereover with its lower peripheral edges 92 disposed downwardly.The order of nesting these two sections may be reversed whereby thelower hull section 84 is disposed within the intermediate hull section82. In order to obtain a compact nested relationship the upper hullsection 81 is thereafter inverted with the deck 99 disposed downwardlyand with the attachment flanges 102 thereof resting on the attachmentflanges of the intermediate hull section 82. It will be noted, ofcourse, that the bow end portions of their respective sections when sonested are positioned adjacent each other and the resulting nestedrelationship permits the nested sections to have a height or depthapproximately the height of the side of the intermediate section 82.

Although not shown in the drawings, it is contemplated that theaccessories and parts including thwarts, seat backs, self-bailing motorwell, etc. may also be provided to this embodiment and may be disposedwithin the nested sections to thereby present a shallow package.

It will thus be seen by the preceding paragraphs that we have provided anovel sectional boat which includes relatively few integral sectionshaving structural shapes and details to permit rapid assembly thereof.It is also apparent from the foregoing description that the varioussections of our boat are so arranged and constructed that the use ofspecialized tools is obviated and the structure may be assembled by onehaving no specialized knowledge of boats. It is also apparent from theabove description that this novel boat structure is of such inherentconstruction that the same may be nested into a compact assembly forpackaging thereof.

It will, of course, be understood that various changes may be made inthe form, details, arrangement and proportions of the parts withoutdeparting from the scope of our invention which consists of the mattershown and described herein and set forth in the appended claims.

What is claimed is:

1. A sectional boat comprising a plurality of sections formed ofmoldable fiberglass reinforced plastic material and including a unitarysingle piece, integrally formed fiberglass reinforced molded plasticlower hull section comprising a bottom having integrally formed sideportions extending upwardly and outwardly therefrom, said side portionsbeing elongated converging forwardly to a bow line, said bottomterminating rearwardly in an upstanding wall portion extending betweensaid side portions, said lower hull section having upper peripheraledges defining cooperating attachment surfaces, a unitary single-pieceintegrally formed fiberglass reinforced molded plastic intermediate hullsection including elongated sides converging forwardly to a bow line andhaving lower peripheral edges defining cooperating attachment surfaces,adhesive means sealingly securing said first mentioned attachmentsurfaces to said last mentioned attachment surfaces, said intermediatehull section having upper peripheral edges defining cooperatingattachment surfaces, a unitary single piece integrally formed fiberglassreinforced molded plastic upper hull section including elongated sidesconverging forwardly to a bow line and having an upstanding wall portionextending between said sides adjacent the rear ends thereof, said upperhull section having lower peripheral edges defining cooperatingattachment surfaces, and adhesive means sealingly securing the upperattachment surfaces, of said intermediate hull section to said lowerperipheral attachment surfaces of said upper hull section and wherein atleast a portion of the upper cooperating attachment surfaces of theintermediate hull section and the lower intermediate attachment surfaceof the upper hull section are sealingly secured together along asubstantially inclined plane and whereby the bow lines of said upper,intermediate and lower sections define an upwardly and forwardly curvedprow line and said upstanding wall portions of said sections define atransom.

2. A sectional boat comprising a plurality of sections each being formedof moldable fiberglass reinforced plastic material including a singlepiece molded lower formed side portions extending upwardly and outwardlytherefrom, said side portions being elongated and converging forwardlyto a bow line, said bottom terminating rearwardly in an upstanding wallportion, said lower hull section having upper peripheral edges definingcooperating attachment surfaces, a unitary single piece moldedintermediate hull section including elongated sides converging forwardlyto a bow line and having lower peripheral edges defining cooperatingattachment surfaces, adhesive means for sealingly securing said firstmentioned attachment surfaces to said last mentioned attachmentsurfaces, said intermediate hull section having upper peripheral edgesdefining cooperating attachment surfaces, a single piece molded unitaryupper hull section including elongated sides converging forwardly to abow line and having an upstanding wall portion extending between saidsides adjacent the rear ends thereof, said upper hull section having adeck portion integrally formed with and extending between said sidesadjacent said bow line, said deck portion having rearwardly extendingand transversely spaced narrow side deck portions terminating rearwardlyin enlarged stern deck portions to thereby define a cockpit, said upperhull section having lower peripheral edges defining cooperatingattachment surfaces and adhesive means sealingly securing the uppercooperating attachment surfaces of said intermediate hull section to thelower cooperating attachment surfaces of said upper hull section andwherein at least a portion of the upper cooperating attachment surfacesof the intermediate hull section and the lower intermediate attachmentsurface of the upper hull section are sealingly secured together along asubstantially inclined plane and whereby the bow lines of the upper,intermediate and lower sections define an upwardly and forwardly curvedprow line and said upstanding wall portion defines a transom.

3. A sectional boat comprising a plurality of sections and being formedof moldable material and including a single piece integrally formedmolded lower hull section comprising a bottom having side portionsextending upwardly and outwardly therefrom, said side portions beingelongated and converging forwardly to a bow line, said bottomterminating rearwardly in an upstanding wall portion, said lower hullsection having upper peripheral edges defining cooperating attachmentsurfaces, a single piece integrally formed molded unitary intermediatehull section including elongated sides converging forwardly to a bowline and having an overall length substantially less than the overalllength of said lower hull section, said sides of the intermediate hullsection having lower edges defining cooperating attachment surfaces,adhesive means for sealingly securing said first mentioned attachmentsurfaces to said last mentioned attachment surfaces, said sides of theintermediate hull section having upper edges curving downwardly andrearwardly to said lower edges, said upper edges of said sides of theintermediate hull section defining attachment surfaces, a unitary singlepiece, integrally formed molded upper hull section including elongatedsides converging forwardly to a bow line and having an upstanding wallportion extending between said sides adjacent the rear ends thereof,said up per hull section having an overall length substantially equal tothe overall length of said lower hull section, said sides of said upperhull section having lower peripheral edges being substantially straightat their ends curving downwardly and rearwardly at their intermediateparts and defining cooperating attachment surfaces, and adhesive meanssealingly securing the lower cooperating attachment surfaces of saidupper hull section to the upper cooperating attachment surfaces of saidintermediate hull section and a portion of the upper cooperatingattachment surfaces of said lower hull section whereby the bow lines ofthe upper, intermediate and lower sections define an upwardly andforwardly curved prow line, and said upstanding wall portion defines atransom.

4. A sectional nested boat structure comprising a unitary upper hullsection including elongated sides converging forwardly to a bow line andhaving an upstanding wall portion extending between said sides adjacenttheir rear ends, said upper hull section having a deck portionintegrally formed with and extending between said sides adjacent saidhow line, said sides of said upper hull section having lower edges beingsubstantially straight at the rear ends thereof curving upwardly andforwardly and terminating in substantially straight portions at the for-Ward ends thereof, a unitary intermediate hull section includingelongated sides converging forwardly to a bow line and having an overalllength somewhat less than the overall length of said unitary upper hullsection, said sides of said intermediate hull section havingsubstantially straight lower peripheral edges and having upperperipheral edges curving rearwardly and downwardly to said lowerperipheral edges, said upper hull section being inverted to dispose saiddeck downwardly and said intermediate hull section being inverted andpositioned upon said upper hull section with its upper peripheral edgesengaging at least a portion of the lower peripheral edges of said upperhull section, said intermediate hull section when so disposed having itslower peripheral edges coplanar with at least a portion of the lowerperipheral edges of said upper hull section, a unitary lower hullsection comprising a bottom having integrally formed side portionsextending upwardly and outwardly therefrom, said side portions beingelongated and converging forwardly to a bow line, said bottomterminating rearwardly in an upstanding wall portion extending betweensaid side portions, said unitary lower hull section thereafter beingdisposed and nested within said intermediate and upper hull sectionswith the bottom disposed downwardly whereby said nested sections have aheight substantially equal to the height of a side of one of thesections.

5. A sectional nested boat structure formed of moldable material andcomprising a unitary single piece integrally formed molded upper hullsection including elongated sides converging forwardly to a bow line andhaving an upstanding wall portion extending between said sides adjacenttheir rear ends, said upper hull section having a deck portionintegrally formed with and extending between said sides adjacent saidhow line, said upper hull section including lower peripheral edges, aunitary single piece integrally formed molded intermediate hull sectionincluding elongated sides converging forwardly to a bow line and havingupper and lower peripheral edges, said upper hull section being invertedto dispose said deck downwardly, said intermediate hull section beinginverted and positioned upon said upper hull section with its upperperipheral edges engaging the lower peripheral edges of said upper hullsection, a unitary single piece integrally formed molded lower hullsection comprising a bottom having integrally formed side portionsextending upwardly and outwardly therefrom, said side portions beingelongated and converging forwardly to a bow line, said bottomterminating rearwardly in an upstanding wall portion extending betweensaid side portions, said intermediate and upper hull sections havingtransverse widths at given points along the sides thereof greater thancorresponding widths of the lower hull section whereby said lower hullsection may be nested within said intermediate and upper hull sectionswith its bottom disposed downwardly.

6. The structure set forth in claim and wherein said sections are formedof a fiber glass material.

7. A sectional boat structure formed of moldable material comprising aunitary single piece integrally formed molded upper hull sectionincluding elongated sides converging forwardly to a bow line and havingan upstanding wall pontion extending between said sides adjacent therear ends thereof, said upper hull section having a deck portionintegrally formed with and extending between said sides adjacent saidbow line, said upper hull section including lower peripheral edges, aunitary single piece integrally formed molded intermediate hull sectionincluding elongated sides converging forwardly to a bow line and havingupper and lower peripheral edges, a unitary single piece integrallyformed molded lower hull section comprising a bottom having integrallyformed side portions extending upwardly therefrom and being elongatedand converging forwardly to a bow line, said bottom terminatingrearwardly in an upstanding wall portion extending between said sideportion, said unitary lower hull section being disposed and nestedwithin said intermediate hull section and said upper hull sectionthereafter being inverted with its deck disposed down- Wardly and havingits lower peripheral edges engaging the upper peripheral edges of saidintermediate hull section whereby said nested sections have a heightsubstantially equal to the height of a side of one of said sections.

References Cited in the file of this patent UNITED STATES PATENTS1,846,963 Grogan Feb. 23, 1932 2,093,366 Robinson Sept. 14, 19372,251,621 Van Hoorn Aug. 5, 1941 2,370,401 Grimston Feb. 27, 19452,376,753 Bowen May 22, 1945 2,515,161 Hall July 11, 1950

1. A SECTIONAL BOAT COMPRISING A PLURALITY OF SECTIONS FORMED OFMOLDABLE FIBERGLASS REINFORCED PLASTIC MATERIAL AND INCLUDING A UNITARYSINGLE PIECE, INTEGRALLY FORMED FIBERGLASS REINFORCED MOLDED PLASTICLOWER HULL SECTION COMPRISING A BOTTOM HAVING INTEGRALLY FORMED SIDEPORTIONS EXTENDING UPWARDLY AND OUTWARDLY THEREFROM, SAID SIDE PORTIONSBEING ELONGATED CONVERGING FORWARDLY TO A BOW LINE, SAID BOTTOMTERMINATING REARWARDLY IN AN UPSTANDING WALL PORTION EXTENDING BETWEENSAID SIDE PORTIONS, SAID LOWER HULL SECTION HAVING UPPER PERIPHERALEDGES DEFINING COOPERATING ATTACHMENT SURFACES, A UNITARY SINGLE-PIECEINTEGRALLY FORMED FIBERGLASS REINFORCED MOLDED PLASTIC INTERMEDIATE HULLSECTION INCLUDING ELONGATED SIDES CONVERGING FORWARDLY TO A BOW LINE ANDHAVING LOWER PERIPHERAL EDGES DEFINING COOPERATING ATTACHMENT SURFACES,ADHESIVE MEANS SEALINGLY SECURING SAID FIRST MENTIONED ATTACHMENTSURFACES TO SAID LAST MENTIONED ATTACHMENT SURFACES, SAID INTERMEDIATEHULL SECTION HAVING UPPER PERIPHERAL EDGES DEFINING COOPERATINGATTACHMENT SURFACES, A UNITARY SINGLE PIECE INTEGRALLY FORMED FIBERGLASSREINFORCED MOLDED PLASTIC UPPER HULL SECTION INCLUDING ELONGATED SIDESCONVERGING FORWARDLY TO A BOW LINE AND HAVING AN UPSTANDING WALL PORTIONEXTENDING BETWEEN SAID SIDES ADJACENT THE REAR ENDS THEREOF, SAID UPPERHULL SECTION HAVING LOWER PERIPHERAL EDGES DEFINING COOPERATINGATTACHMENT SURFACES, AND ADHESIVE MEANS SEALINGLY SECURING THE UPPERATTACHMENT SURFACES, OF SAID INTERMEDIATE HULL SECTION TO SAID LOWERPERIPHERAL ATTACHMENT SURFACES OF SAID UPPER HULL SECTION AND WHEREIN ATLEAST A PORTION OF THE UPPER COOPERATING ATTACHMENT SURFACES OF THEINTERMEDIATE HULL SECTION AND THE LOWER INTERMEDIATE ATTACHMENT SURFACEOF THE UPPER HULL SECTION ARE SEALINGLY SECURED TOGETHER ALONG ASUBSTANTIALLY INCLINED PLANE AND WHEREBY THE BOW LINES OF SAID UPPER,INTERMEDIATE AND LOWER SECTIONS DEFINE AN UPWARDLY AND FORWARDLY CURVEDPROW LINE AND SAID UPSTANDING WALL PORTIONS OF SAID SECTIONS DEFINE ATRANSOM.